Other Waste Streams

Soluble silica can be recovered from rice husks. Concentrations as high as 90% or more can only be recovered by being through a decomposition treatment that uses a titanium oxide catalyst, followed by separation from the catalyst with a sieve.

Before Treatment
Rice husks

After Treatment
Silica recovered
(Containing 90% or more of soluble silica)

The titanium oxide catalyst can decompose the resin component of carbon fibre-reinforced plastic (CFRP) to recover expensive carbon fliers without damaging the fibres.

Treatment of CFRP (semi-preg) in form of woven fabric

Before Treatment
Black carbon fibres and a white resin are woven together. The resin is also used in the spaces between the carbon fibres.

After Treatment
The resin component is completely decomposed, and the carbon fibres can be recovered in the form of woven fabric.

Treatment of CFRP (pre-preg) in form of sheet

Before Treatment
A product obtained by constructing unidirectional long carbon fibres into a sheet using a resin.

After Treatment
The resin component is completely decomposed, and the carbon fibres can be recovered in the form of long fibres.

Shredder residue discharged from a recycling plant is treated. Various kinds of organic material contained in the residue are decomposed, and valuable metals such as iron, aluminium, and copper, are recovered.

Decomposition Treatment
Shredder Residue

Recovery of valuable metals
Copper/electrical wires, iron, aluminium, etc., and glass

An aluminium and steel products with a coating material or resin is treated.

The coating material or resin is decomposed, and the aluminium or steel product is recovered in a state that contains only the valuable metals.

Coating removal treatment of aluminium product

Decomposition Treatment

Coating removal
The coating on the surface is completely removed.

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